Can you code a green wire for hot?

At work, they are looking to run a 220 circuit through conduit 40'. They have a spool of 10awg green and they want to know if its possible to use green for the hot leads and tape them black and red at each end respectively? I know this is possible for white, but is green off limits?

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Can you code a green wire for hot?

Violation of 250.119.

250.119 Identification of Equipment Grounding Conductors.

Unless required elsewhere in this Code, equipment grounding conductors shall be permitted to be bare, covered, or insulated. Individually covered or insulated equipment grounding conductors shall have a continuous outer finish that is either green or green with one or more yellow stripes except as permitted in this section. Conductors with insulation or individual covering that is green, green with one or more yellow stripes, or otherwise identified as permitted by this section shall not be used for ungrounded or grounded circuit conductors.

Spend the $90 for a 500ft spool of black, or buy 50' each of black and red by the foot at Home Depot.

Can you code a green wire for hot?

Nobody caught the part where he said he "knew" it was OK with white wire. It's only OK to recode a white wire in a cable, not conduit.

But, like 220 said, it's pretty minor, but I would only do it in a pinch. And I wouldn't use tape. I'd use something permanent like a sharpie. I once colored some gray #12 with a red sharpie, so about a foot at each end was red inside the pipe.